Array problem with const integral data

const char Answer[20]=( 'B','D','A','A',
'C','A','B','A',
'C','D','B','C',
'D','A','D','C',
'C','B','D','A');

error C2864: 'TestGrader::Answer' : only static const integral data members can be initialized within a class


I need to be able to use this data to grade someones answers to a survey

Use the class constructor's initializer list.

Initialization Lists in C++ - Cprogramming.com

ok i have revised the code to

Code:

---

class TestGrader
{
public:
        int setKey;
        char grade[20];
        char Answer[20] = {'B','D','A','A','C','A','B','A','C','D','B','C','B','A','D','C','C','B','D','A'};
};



        {        if(test.grade[test.setKey] = test.Answer[test.setKey])

---

i get these three errors:

error C2059: syntax error : '{'
error C2334: unexpected token(s) preceding '{'; skipping apparent function body
error C2039: 'Answer' : is not a member of 'TestGrader'

any thoughts would be appreciated because i cannot figure out what is causing the errors due to the coding being correct

You can't initialize the values of an array like that. You have to assign the values in the constructor. One option is to make an array in the source file and copy it using memcpy inside the constructor.

Code:

---

namespace
{
  char Answer_Initializer[] = {'B','D','A','A','C','A','B','A','C','D','B','C','B','A','D','C','C','B','D','A'};
}

// ... later copy the contents into your Answers array in the constructor.

---

You cannot use a member like that, initializer list or otherwise.

What happened to Answers being const? And as long as it is const, they may as well be static.

Being static allows you to initialise the array outside the class:

Code:

---

const char TestGrader::Answer[20] =
    {'B','D','A','A','C','A','B','A','C','D','B','C','B','A','D','C','C','B','D','A'};

---

the reason that I don't understand how do make an array is because the teacher i had for C++ programming never explain anything

Code:

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{        if(test.grade[test.setKey] = test.Answer[test.setKey])

---

You sure your don't mean == instead of =?

Quote:

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Originally Posted by JackValentine01

the reason that I don't understand how do make an array is because the teacher i had for C++ programming never explain anything

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Look in the book recommendations sticky, for a good book.